Shuttle tension



2 Sheets-Sheet l INVENmR. WKZ/ahw ./7. 7 o

ATTORNEYS.

E i s W. A. TEBO SHUTTLE TENSION Aug. 22, 1939.

Filed Feb. l2, 1938 W. A. TEBO Aug. 22, 1939.

SHUTTLE TENSION Y 2 Sheets-Sheet 2 Filed F'eb. l2, 1938 IN V EN TOR. M2M/72 776,50

y'pa/bwsmw A TTORNEYS.

Patented Aug. 22,- 1939 UNITEDI STATES PATENT ori-ICE 26 Claims.

This invention relates to a shuttle; and has for one of its 'objects the proyision of a tension device for the filling yarn as it is drawn from the bobbin in the shuttle which willpermit the shuttle to be easily threaded andthe yam accuratelycontrolled as it is drawn from the thread eye of the shuttle.

Another object of the invention is to Aprovide a tension through which knots, slubs and the like will enter and pass without breaking or stretching the yarn in which they occur.

Another object of the invention is to provide a tension device for the filling yarn which will rst apply to the filling yarn a lesser tension than is applied after the filling yarn has passed along the tension device a substantial distance, .whereby a gradually increasing tension will be provided and the pressure on the yarn distributed over a greater area.

Another object of the invention is the provision of a gradually increasing tension on the filling yarn las it enters between a pair of tension members by the mounting of the tension members and the locating of the meansfor urging the members toward each other so that the center of effort of the tension means is applied at a location to provide the' desired results.

Another object of the invention is to provide a tension device for the filling yarn which when utilized in an automatic threading shuttle will cooperate with a stop member for positioning the iilling yarn at a certain desired location during the rst pick after transfer of the bobbin but will permit easy threading into the tension device during the first pick after transfer of the bobbin.

Another object of the invention is the provision of a stop which will control the yarn between tension members and Which will permit with facility the drawing of the yarn into the thread eye of the shuttle on the second pick after transfer of the bobbin.

Another object of the invention is the provision of a stop which will so guide the lling yarn past the free end of the same on the second pick after transfer that the lling yarn will not be forced to bend as muchas when passing over the free end of the stop.

Another object of the invention is to provide a stop over which lling yarn, such as rayon or the like, having tender filaments may pass without rupturing these tender filaments at the time of positioning the yarn in the thread eye of the shuttle on the second pick after transfer of the bobbin.

Another and more speclc object of the invention is the'provision of a stop which will serve to support the yarn on thefirst pick after transfer of the bobbin in an automatic shuttle but which will permit with surety the lling yarn being drawn past the free end of the stop and into the thread eye of the shuttle on the second pick after transfer.

Another and more specific object is to provide a stop which will by reason of its arrangement guide the filling yarn past the free end of the stop itself at the time of the second pick after transfer of the bobbin so as toA assure the yarn passing the free end of the stozuon the second A pick after transfer.

With these and other objects in View, the invention consists of certain novel features of construction, as will be more f'ully described, and particularly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is a top plan View of a fragmental portion of an automatic shuttle showing the threading block as containing the features of the present invention; l

Fig. 2 isa central sectional view through the threading block'alone;

Fig. 3 is a view similar to Fig. 2 illustrating the threading block without the stop shown in Fig. 2;

Fig. 4 is a sectional view on line 4--4 of Fig. 2;

Fig. 5 is a sectional view on line 5-5 of Fig. 2;

Fig. 6 is a sectional View on substantially line 6-6 of Fig. 2;

Fig. '7 is a sectional view on line 1 1 of Fig. 3;

Fig. 8 is a top plan View of a modified form of shuttley and thread block with the position of the stop and tension members further forward;

Fig. 9 is a central sectional view on line 9 9 of Fig. 8;-

Fig. 10 is a sectional view on line IU--IU of Fig. 8;

Figs. 11, l2, 13, 14 and 15 are perspective views of a single tension member showing various shapings of the member, the companion member being understood to be complementary to the members illustrated in these views;

Fig. 16 illustrates somewhat diagrammatically and on a greatly enlarged scale, la sectional view through a pair of tension members showing the location of the springs for urging the members toward each other and showing the yarn 1n position between the tension members;

Fig. 17 illustrates a View similar to Fig. 16- but of a slightly modified shaping of tension member wherein the engaging friction surfaces opl posite the tension springs are flat and in engagement throughout their length while the friction members are ared beyond these surfaces to provide a. wedge-shaped friction opening;

Fig. 18 is a view similar to Fig. 16 but modified to the extent that the tension members are flat throughout their length with spaced protuberances which engage at the top and bottom of the tension members;

Fig. 19 is a sectional view indicating a pair of members like Fig. 12 as if sectioned on substantially line lil-I9 of Fig. 12;

Fig. 20 is a sectional View indicating a pair of members like Fig. 13 as if sectioned on substantially line 20-20 of Fig. 13;

Fig. 21 is a sectional view indicating a pair of members like Fig. 11 as if sectioned on substantially line 2|2| of Fig. 11;

Fig. 22 is a sectional view indicating a pair of members like Fig. 14 as if sectioned on substantially line 22-22 of Fig. 14;

Fig. 23 is a sectional view indicating a pair of members like Fig. 15 as if sectioned on substantially line 23-23 of Fig. 15;

Fig. 24 is a perspective view of the particular stop which I use for elevating and controlling the yarn on the first pick after transfer;

Fig. 25 is a perspective view of a modified form of stop.

In the tensioning of lling yarn in a shuttle by means of tension members, it is desirable that the filling yarn be permitted to enter between the tension members on the first pick after transfer of the bobbin in order that complete threading of the tension members and thread eye may take place on the second pick after transfer; and I have provided such a tension Whichpermits more easy threading by reason of the fact that the yarn may enter between the tension members very easily, there being practically no tension applied to the yarn at the entrance end of the tension members, the tension on the filling yarn being applied to gradually increase as the filling yarn proceeds or progresses forwardly between the tension members so that the desired amount of tension is applied; and in order that I may control this tension so that I may have the same amount of tension on the iirst pick after transfer as on subsequent picks, I have provided a stop which assists in locating the filling yarn between the tension members at a desired point; and in order that the filling yarn may pass the free end of this stop easily on the second pick after transfer of the bobbin I have the outer edge of the stop so shaped that the filling yarn is guided past one of its free ends without the necessity of much forced bending of the filling yarn about the stop as was necessary with a pin or the like heretofore used in some instances as a shuttle stop. This being of a particular advantage in the working of filling yarns lhaving delicate filaments, such as rayon or the like, which fine laments might become ruptured at the time the yarn passes the stop on the second pick after transfer; and the following is a more detailed description of the present embodiment of this invention, illustrating the preferred means by which these advantageous results may be accomplished lWith reference to the drawings, 25 indicates the usual shuttle of wood or liber-clad material having a bobbin opening 26 therein with a bobbin 21 supplied with lling yarn 28 which is drawn from the bobbin forwardly in between tension members 35 and between the walls of a longitudinal thread passage 29a of the threading block 28, thence down past the free end of stop 65 and down into thread eye 30 of the shuttle to be positioned in the shed formed by the warp yarn. This block 29 is usually cast in a certain desired shape with other parts supplied for the purpose of providing wear surfaces and a tensioning means, or to provide other desired functions which it is desired should be possessed. 'I'his block usually comprises opposite side walls 3| and 32 with a guard hook 33 extending from the wall 32 and a horn 34, 34a also extending from the Wall 32 to assist in preventing unthreading of the filling yarn from the longitudinal thread` passage 29a of an automatic shuttle on the second pick after transfer.

In order to control the tension on the filling yarn as it passes between the walls of the longitudinal thread passage 29a of a threading block of this character, tension members' designated generally 35 are provided but which in this particular instance I have specially formed and arranged as to operation in order that they will perform functions heretofore not performed by tension members as the yarn passed between the members from the entering edge of the members nearest to the bobbin to the leaving edge of the members distant from the bobbin. 'Ihe function to be performed by these tension members is that there shall be provided a gradually increasing tension on the filling yarn as it proceeds to leave the shuttle; and in or'der to accomplish this I have provided these tension members designated generally 35 but which consist of a pair of members 36 and 31 somewhat Wider than is usual. Themembers in one of their simple forms are substantially as they have heretofore existed except that they are wider, and the opening 31a in the members through which the tension member support pin 38 extends is located at one side of the center line through the members, shown for example as forward or toward the leaving edge, and I also provide the guide lug 39 forwardly of a center line of the members, which guide lug extends into the guide tubes 40 usually of hardened material located in the side walls of the thread block. Both the guide lug and support pin for the movable member are located between the entering and leaving edges or the imaginary continuation of these edges parallel to the medial line of the member, whereby the movement of the guide lug is reduced when a knot enters between the tension members and the friction on the knot is' reduced at this instant of entry. Thus, the tension members are supported for some rocking movement in a manner similar to that heretofore provided but yet at one side of a center line between them, and yet about an axis nearer the leaving edge of the member than the entering edge thereof. These friction tension members are usually longest in the direction from top to bottom of the shuttle, and accordingly the center or medial line extends longitudinally of the friction members. I intend, however, that this longitudinal center or medial line shall be considered as from top to bottom of the members generally mid-way between the edges even though the member be longer lengthwise of the shuttle or of some irregular shape. 'I'he tension member is usually considered as having a shape substantially the shape of the area which may contact the yarn and the entering and leaving edges are considered with reference to thi's area.

Tension springs 4i which urge these members toward each other are supported in cups 42 threaded as at 43 into the side walls of the thread block 29 at such location that their center of effort is also at one side of the centerline through the members so that as viewed in Fig. 16 the members are urged toward each other at one of -their edges 45 while leaving' their entering edge 46 freer to be spread apart and by reason of the flared flanges 41 on each member .yarn 49 may readily enter not only between the flanges 41 but also between the edges 46 of the tension members as little or no resistance is provided for such entry, whereas by reason of the. guide thus formed the yarn may then readily pull into the more tensioned portion of the tension members opposite the springs 4| where the greater part of the desired amount of tension is applied to the yarn as it passes between these members.

In the most simple form as above explained the friction surfaces of the members will be flat or plain and the progressively increasing tension will be provided by the location of the springs to apply their center of effort at the desired point. It will, however, be apparent that other ways of accomplishing thisgradually increasing tension may be had, and I have illustrated in Fig. 18 a means by which I positively determine that an opening will occur between two perfectly fiat plates by providing protuberances 49 at the upper and lower portions of the surfaces of these members, as will be clearly apparent from the illustration in Figs. 11 and 18. Then again the tension members may have their surfaces 50 at the pointsl opposite the springs perfectly fiat and in engagement, while the extended width of the members may be ared apart as at Fig. 17, to provide a wedge-shaped opening 52 between them. Then again the members may be perfectly flat and in engagement as at 53 in Fig. 12, whereas the upper portions of the members may be struck to provide flaring faces toward each other as at 54, as will be readily apparent from Figs. 12 and 19, there being a protuberance 49 at the -upper edge to assist in the positioning of this In Fig. 13 this wedge-shaped portion is illus` trated as existing only in a narrow strip 56 across the face, while the upper portion 51 and lower portion 51a of the friction member is plain and smooth and may come into engagement. In a still different instance in orderto accomplish the gradually increasing tension I provide the friction members with a wavy surface by formations as at 58 and 59, as shown in Figs. 14 and 22. These wavy surfaces terminate short of the top of the tension member leaving a plain or smooth surface for easy threading. Here, however, the distance between the successive points of contact of the waves 58 and 60 will be differe'nt and greater than the distance between the points of contact 60 and 59 so that a sharper bight occurs between the crests 69 and 59 than betweenA the crests of the wavy edges 58 and 60, and by reason of the sharper bight or sharper undulation of the yarn a greater tension will be caused to exist at this more advanced position of the yarn than were the path straighter as between the undulations or crests of the waves 59 and 60. This same condition occurs only in a stripe at 6| in Figs. l5 and 23, the same principle of waves controlling the tension being existent.

In Figs. 11 and 21 there exists a pad of more effective increased width than heretofore specically explained by reason of the extension 62 which protrudes beyond the pad rof the width illustrated in the other figures in order that a greater leverage of movement may be had at the entering edge 0f the pads, as is, apparent in Fig. 21.

'I'he tension members illustrated in Figs. 2, 3 and 9 are all inclined in the general direction of the running filling yarn. Tension members inclined in this direction have a much greater tendency to cause the filling yarn to travel down to its iinal threaded position between tension members than tension members oppositely inclinedor against the general direction of the running lling yarn.

When tension members are used in conjunction with a stop, it is usually necessary to have them vertical or inclined against the general direction of the running filling yarn so that the stop in the path of the yarn will .prevent the yarn from going down too far between the tension members on the first pick after transfer of the bobbin, the stop maintaining the yarn in a position where a certain greater pressure is applied. To accomplish this, I have provided a stop 65 which is of a particular and new formation and serves to maintain the yarn in this upper position between the tension members in the threading block during the first pick after transfer but which is of such a formation' that it assists materially in guiding the yarn past the free end of the stop for positioning into the eye of the shuttle on the second pick of the shuttle after bobbin transfer; and in order that the yarn may have greater tension applied by the friction member during the first pick after transfer, it will be noted that the springs 4|, as shown in Figs. 2 and 4, are located higher than the middle, such as shown in Fig. 3, which is merely for the illustration of the gradual increasing tension with-- out the stop in combination therewith. This feature of having tension spring or springs higher up, as in Figs. 2 and 4, is used in conjunction with a stop 55, Fig. 24, to maintain the filling yarn in a certain position between the tension members where a certain greaterpressure is applied to the yarn on the first pick after transfer of the bobbin. On the second pick after transfer the yarn betweenv ther tension members is drawn over the free end 68 of stop 65 and down into the thread eye 39, Fig. 1; this positions the yarn below the tension spring or springs where a lesser pressure is applied on thesecond and subsequent picks after transfer. This lesser pressure which causes a lesser tension on yarn is increased by the yarn drawing about certain posts forming the thread eye, two of which are shown at 'lll and 1| in Fig. 6. This substantially equalizes the tension on the filling yarn on the first, second and subsequent picks after a transfer of the bobbin.

The stop which is here illustrated consists of an elongated member 65 shown alone in Fig. 24 or 64 in Fig. 25, which is positioned in the thread block of-the shuttle at an angle such as shown in Fig. 10, so as to assist in directing the thread downwardly but yet is of Vsuch a character as to support the thread above it on the first pick after transfer. The insertion of the stop through the threading block is limited by the flare 61. This stop is provided with a groove 66 in its edge over which the yarn travels to assist in preventing the yarn from sliding down the incline until the second pick after transfer. This stop 65 is located beneath the guard hook designated 33 in Fig. 1

in the showings of Figs. 1, 2 and 5, while stop 64 ispositioned beneath the horn 34 in the showings of Figs. 8, 9 arid 10, in which latter group of gures the tension members 35 are positioned further forward in the threading block than in the showings of Figs. l, 2 and 5, and the stop 64 has a finger 63 which extends laterally at a location forward of the slanted front horn 34a.

'I'his stop 65 consists of a solid piece of stock or it could be a bight of wire so long as it provides supporting edges 68 and a guiding edge 69 for the yarn. It will be seen, as shown in Fig. 2, that the position of the yarn 48 at the time of the first pick after transfer is such that it is supported by the stop 65, although the friction members tend to draw the yarn somewhat downwardly. However, when the shuttle moves in the opposite direction the thread quickly slides down slanted 4horn 34a and into thread eye 30 and commences to pull about the posts 10 and TI. Thus, the yarn passes over the corner 12 of the stop 65 or over the iinger 63 of the stop 64 by reason of its position well forward in the shuttle. By reason of the long guiding edge 69 of the stop, the yarn slides along the same and is thus guided over the other corner 13 of the stop without any diiiiculty, thus positioning the yarn in its lowermost position over the supporting hardened wear pin 14 in the shuttle on the second pick after transfer.

It thus is readily apparent that the friction members may take several different forms to provide a gradually increasing tension', both by reason of their surface shapes and by reason of their particular mounting and that these tension members may be used with or without a stop. It will also be readily apparent that these tension members may be used in a hand threading or a regular shuttle. The stops may'r be positioned at different locations in the automatic threading block to assist the functioning of the friction members in this particular arrangement and the assuring of the threading in these members by reason of the guiding edge surface which it presents to assure the thread passing the stop.

The foregoing description is directed solely to- Wards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim:

l. I n a shuttle, a unit pair of opposed friction' tension members each having a continuous friction surface, means for relatively urging said members toward each other, said members being shaped and mounted to provide a gradually decreasing distance between them along the path of travel of the yarn as the yarn advances between the members, whereby the pressure for tensioning the yarn gradually and progressively increases.v

2. In a shuttle, a pair of friction tension members, means for relatively vurging said members toward each other, said members having flat surfaces, and a protuberance on one of said members engaging the other member at its entering edge of the yarn to provide a wedge-shaped opening for the yarn.

3. In a shuttle having a bobbin chamber and a yarn delivery eye, tension means comprising relatively movable tension members between.

which the yarn travels on its way from the bobbin chamber to the delivery eye, said members being of such a nature as to resist free movement of the yarn by frictional contact therewith, said tension members being so constructed and arranged that the point at which the yam first encounters frictional resistance is 'substantially spaced, in the direction of yarn movement, from the point at which the yarn ceases to contact said tension members, and spring means resiliently urging at least one of said tension members toward the corresponding member located at the opposite side of the yarn, said spring means being so located, designed and arranged that the frictional resistance to movement of the yarn progressively increases as it travels along between said movable tension members substantially throughout the contact of the members with the yarn.

4. In a shuttle, a pair of friction tension members at least one of which is' rockably supported therein, guide lugs and a support pin for said members located at one side of the longitudinal center vof said members for rockably supporting said members, and a spring urging at least one of the members toward the other and located on the side of the longitudinal axis of the movable member toward the leaving edge of the member.

5. In a shuttle, a pair of friction tension members at least one of which is rockably supported therein, guide lugs and a support pin for said members located on the side of the longitudinal center ofl said members towards the leaving edge thereof for rockably supporting said members, and spring means nearer the leaving edge for urging at least one of the members towards the other.

6. In a shuttle, a pair of friction tension members, one of said members having a lug forming a pivotal mounting at one end and an opening for a support pin forming a pivotal mounting at the other end of the member, said pivotal mounting being in a line nearer the leaving edge of the members than the longitudinal center of said rockable member.

7. In a shuttle, a pair of friction tension members, one of said members having a lug forming a pivotal mounting at one end and an opening for a support pin forming a pivotal mounting at the other end of the member, said pivotal mounting being in a line nearer the leaving edge of the members than the longitudinal center of said rockable member, and at the same time back of said leaving edge.

8. In an automatic shuttle, a pair of friction members, means for urging said members toward each other with the center of effort of said means above the path of travel of the yarn on the second and subsequent picks and nearer the leaving edge than the longitudinal center of said member, and a stop located forward of said members for supporting said yarn'at the location of the said means to cause an increased tension on the ilrst pick after transfer.

9. In a shuttle, a pair of friction tension members at least one of which is rockably supported therein, guide lugs and a support pin for said members located at one side of the longitudinal center of said members for rockably supporting said members.

10. In a shuttle, a pair of friction tension members at least one of which is rockably supported therein, guide lugs and a support pin for said members located at one side of the longitudinal center of said members for rockably supporting saidV members but not wholly beyond said leaving edge.

11. In a shuttle, a pair of friction tension members at least one of which is rockably supported therein, guide lugs and a support pin for said members located at one side 'of the longitudinal center of said members yet back ofthe leaving edge of the member for rockably supporting said members, and resilient means acting along the line of the said pivotal aids to urge the members toward each other.

12. In a shuttle adapted to 1eceive`a yarn carrier, a pair of friction tension members, at least one of which is movably supported therein, resilient means urging said movable member toward the other member, the center of effort of said resilient means being located substantially eccentric to the medial line of said movable member `and nearer to the leaving edge than to the entering edge of the member but not wholly beyond said leaving edge, whereby a gradually increasing pressure is applied to the yarn to minimize the formation of kinks between the members and the yarn carrier.

13. In a shuttle adapted to receive a yarn carrier, a pair of friction tension members at least one of which is movably supported therein, a spring urging said movable member toward the other member, the center of effort of said spring being located, substantially nearer the leaving edge thanthe entering edge of said movable member but not wholly beyond said leaving edge, whereby the members may open easily at the entering edge when a knot, or slub, strikes at the entrance between said members.

14. Ina shuttle adapted to receive a yarn carrier, a pair of friction tension members at least one of which is movably supported therein, a spring urging said movable member toward the other member, the effort of said spring being located wholly to one side of the medial line of said movable member and nearer the leaving edge than the entering edge of the'member, but not wholly beyond said leaving edge, whereby a gradually increasing pressure is applied to the yarn to minimize the formation of kinks between the members and the yarn carrier, or the members may open easily at the entering edge when a knot, or slub, strikes at the entrance between said members.

15. In a shuttle adapted to receive a yarn carrier, a pair of friction tension members at least one of which is movably supported therein, a spring urging said movable member toward the other member, the effort of said spring being located within the confines of the edges of said member and substantially eccentric to the medial line of said movable member and nearer the leaving edge than the entering edge of the member, whereby a gradually increasing pressure is applied to the yarn to minimize the formation of kinks between the members and the yarn carrier, or the members may open easily at the entering edge when a knot, or slub, strikes at the entrance between said members.

16. In a shuttle adapted to receive a yarn carrier, a pair of friction tension members at least one of which is movably supported therein, a spring urging said movable member toward the other member, the effort of said spring being located within the confines of and between the leaving edge and the medial line of said movable member, whereby a gradually increasing pressure is applied to the yarn to minimize the formation of kinks between the members and the yarn carrier, or the members may open easily at the entering edge when a knot, or slub, strikes at the entrance between said members.

17. In a shuttle adapted to receive a yarn carber, but not -wholly beyond said leaving edge or a continuation of the leaving edge parallel to said medial line whereby a gradually increasing pressure is applied to the yam to minimize the for mation of kinks between the members and the yarn carrier, or the members may open easily at the entering edge when a'knot, or slub, strikes at the entrance between said members.

18. In a shuttle adapted to receive a yarn carrier, a pair of friction tension members for exerting a slip grip on the running filling yarn, at least one of said members being provided with a guide lug to movably support said member, a spring urging said movable member toward the other member, said guide lug and the effort of said spring being located wholly to one side of the medial line of said movable member and nearer to the leaving edge than the entering edge of the member, but not wholly beyond said leaving edge or a continuation of the leaving edge parallel to said medial line, whereby a gradually increasing pressure is applied to the yarn to minimize the formation of kinks between the members and the yarn carrier, or the members may open easily at the entering edge when a knot, or slub, strikes at the entrance between said members.

19. In a shuttle adapted to receive a yarn carrier, a pair of friction tension members for exerting a slip grip on the running filling yarn, at least one of said members being provided with a guide lug to movably support said member, a spring urging said movable member toward the other member, the effort of said spring being located within the confines of the edges of said member and substantially eccentric to the medial line of said movable member and nearer to the leaving edge than the entering edge of the member, said guide lug being located between a continuation of the entering and leaving edges parallel to the medial line and substantially eccentric to said medial line and nearer said leaving edge than said entering edge whereby a gradually increasing pressure is applied to the yarn to minimize the formation of kinks between the members and the yarn carrier, or the members may open easily at the entering edge when a knot, or slub, strikes at the entrance between said members.

20. In a shuttle adapted to receive a yarn carrier, a pair of friction tension members for exerting a slip grip on the running filling yarn, at least one of said members being provided with a pin tomovably support' said member, said pin being located substantially eccentric to the medial line of said movable member, and within the confines of the entering and leaving edges of the said member, resilient means urging said movable member toward the other member, the center of effort of said resilient means being located eccentric to said medial line and nearer the leaving edge than the entering edge of the member, but not wholly beyond said leaving edge.

2'1. In a shuttle adapted to receive a yarn carrier, a pair of friction tension members for exerting -a slip grip on the running filling yarn, at least one of said members being provided with a of said movable member and within the confines, .of the edges of said member, a spring urging said movablel member toward the other member, the

effort oi' said spring being located wholly to one side of said medial line and nearer the leaving edge than the entering edge of the member, but not wholly beyond said leaving edge.

22. In a shuttle'adapted to receive a yarn carrier, a pair of friction tension members for exerting a slip grip on the running filling yarn. at least A one of said members being provided withA a pin to movably support 'said member, said pin being located whollyto one side of the medial line of said movable member and within the coniines of the edges of said member, a spring urging said movable member toward the other member, the

v eiort of said spring being located within the coni'lnes of and between the said medial line and the.

' member, said spring being located substantially eccentric to said medial line and nearer the leaving edge than the entering edge of the member, but not wholly beyond said leaving edge.

24. In a shuttle adapted to receive a yarn carrier, a pair of friction tension members at least one of which is movably supported and is provided with a portion protruding beyond the leav ing edge of said movable member, resilient means urging said movable member toward the other member and located at said protuberance where-- by a gradually increasing pressure is applied to the yarn to\minimize the formation of kinks between the members and the yarn carrier.

25. In an automatic shuttle having a bobbin chamber, a pair of friction members, located adjacent the chamber, means for urging said members toward each other with the center of eifort oi said means above the path of travel of the yarn on the second and subsequent picks and a stop located forward of said members for supporting said yarn' on the ilrst pick after transfer and located at a height sumcient to maintain the yarn at substantially the location of the said means \to cause an increased tension on the ilrst pick after transfer.

26. In a shuttle adapted to receive a yarn carrier, a pair of friction tension members for exerting a slip grip on the running filling yarn, at least one of said members being provided with a g yguide lug to movably support said member, resilient means urging said movable member toward the other member, the effort of said resilient means being located .within the confines of and between the leaving edge and medial line of said movable member, and said guide lug being located between said medial line and a continuation of the leaving edge parallel to said medial line whereby a graduaJIy'increaSing pressure is applied to the yarn to minimize the formation of kinks between the members and the yarn carrier, or the members may open easily at the entering edge when a knot, or slub, strikes at the entrance between said members.

. WILLIAM A. TEBO. 

